Spring-seat.



W. LEWIS.

SPRING SEAT.

APPLICATION FILED MAY 5. 1914.

Patented Dec. 14, 1915.

2 SHFETS SHEET I WITNESS S:

W. LEWIS.

mwm,

Patented Dec. 14:, 1915.

2 SHEETS-SHEET 2.

ORNE Y.

WILLIAM LEWIS, 0F UTICA, NEW YORK.

" sire-sear.

Lit'idhd3d.

- Application filed May 5, 191a. Serial No. 836,481:

To all whom it may concern:

Be it known that.][, WILLIAMLEWIS, of

of New York, have inventednew and useful Improvements in Spring-Seats; of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exact description. j

This invention relates tocertain improvements in spring seats of the class set forth in my Patent No. 1,087 ,2 l8 issued February'll, -1914',in which an inner set ofsp'rings is'su'rrounded bye marginal'set of similar springs so that each mt, may; yield under pressure independently*"iof the other, set. These springs are usually mounted upon underly-f ,ing supporting bars having 'nie'ans, such as raised -bosses,.transverse grooves or equivalentadjuncts, for interloekingconnection the distance between'the; springs but entails with the corresponding ends of the springs to hold them in fined relation against lengthwise or transverse movement'on. their sup porting barsj'lhisjnot only standardizes a considerable expense in the making of dies and operation of stamping or pressmg the homes, grooves o'r IlbS in the bars and. make it impossible to"lo cate the springs at any other points along the bars than those de termined by the .location of the boasts,

1 grooves or ribs. Y

Owing to the wide diversity of opinionas to the proper distribution ofsprings for differentclasses of upholstered furniture, as

for example: couches, settees, chairs andotherarticles of furniture requiring spring 7 seats, it is not always possible to meet difi'erent demandswith any special distribution of the springs by the use of spring supports .which establishes a "fixed relation of the springs without carryingin stock an exces- 'sive quantity of ditterently embossed bars bosses and to construct the adjacent ends of the coil springs so that they may be fricand a corresponding equipment of dies for making the'same' and the primary ob ect of my present invention is to obviate these diffi-. culties by using plain stock bars or rods without specially constructedspring seatsor tionally interlocked with' 'the"bars 'and adjusted to any .posltion thereon without disthesprings; from the bars when in use.

Another objectis to permit theuse of one or more extra springs anywhere on the bar as may benecessary to impart to or maintain the desired form of the upholstering. Utica, in the county of Oneida; in theState A further object is to provide for a more evendistribution of the load which may be applied to the inner set of springs'by. tying all of the springs of the inner set to a marginal frame and cross bars carried wholly by the upper ends of said inner set of" springs independently of the marginal frame "which surrounds the outer set of springs.

Other objects and uses will be brought out in the following description.

' lfn'the' drawingklBigure 1' a top plan,

of a spring seat embodying the various features of my invention. Fig.2 isaj id elevation of the same seats Figs. 3' and 4 are enlarged side -elevations'of modified forms of spring-supportingbars shown in Figs. and 2 eiic'ept that eachbar carries a series of threespnngs mstead. of four. Figs. 5 and p 6 are I of thelowe'r-ends ofthesp'rings and adjacent portions of. their supporting bars shown in Figs. 3 and 4.

ll have'shown myinvention as used in connection with spring seats havmg a marginal series of conical coil springs 1+ running around the four sides and an inner ser es or setbf, in this instance four, similar coil l springs -2 .the entire series of both setsbeing' arranged in rows'upon the outer side andinterinediate' supporting bars 3--and i in a special manner hereinafterdescribed. -The outer sides of the upper con volutions of the marginal set of springs are 9 connected by tie-pieces 5 to a marginal frame ''-6 preferably of wire' and ,con.

tinuous around the four sides of the seat.

In a like manner, the outer sides. of the uppermost convolutions of the innerset of springs -2 are connected by tie-pleces 5- to a Separate substantially rectangularmarginal frame --6 having its opposite sides connected by cross-bars -7 extending across the inner sides of the uppermost convolutions of the springs 2' and connected by tie-pieces '-8- which are. also interlocked with the adjacent convolutions of the springs. a As shown more clearly in Figs 2, 3 and 4,1

the outer sides of the upper convolutions'of P the springs -2 are connected by downto the inner sides of the lower convolutions of the outer set of. springs 1 in the same row to normally center the inner set of springs within the outer marginal set, and at the same time, keep the upper ends of such inner set in approximately the same horizontal plane as those of the outer set or in such plane as may be previously determined upon according to the length of the springs and chains.

The marginal frame 6 and cross bars 7 serve to distribute any load which may be applied to or in the vicinity of any one spring to all of the other springs of that set,

the same being also true of the marginal frame 6 for the outer set of springs so that each set may yield under pressure independently of the other set.

The adjacent sides of the upper convolutions of the outer set of coils are connected by chains .10 which together with the tie-pieces 5- and marginal frame 6 serve to hold these springs against relative lateral displacement and at the same time allows a limited yielding action of each.

The spring-supporting bars 3 and 4 extend in the same general direction and, therefore, the springs which are mounted thereon are arranged in rows lengthwise of the bars and, being substantially equal distances apart, are also arranged in rows transversely. The portion of each bar, with which the lower or smaller ends of the corresponding row of springs are slidably interlocked, are straight and of substantially the same cross sectional area to permit the adj acent ends of the springs to be adjusted to any position along such bar without removal therefrom after having once been interlocked therewith, the object of which is to enable the assembler to properly distribute the springs wherever desired along said straight portions without detaching them.

For this purpose, the convolutions at the smaller ends of the springs are preferably arranged close together and the bar for that particular row of springs is passed diamet rically between these convolutions so that the adjacent convolutions are spring-pressed under their own tension against opposite faces of the bar to frictionally hold the springs in their adjusted positions and at the same time permit the sliding adjustment referred to. The lower terminal ends ll of the springs are olfset diametrically of and within the adjacent end of the coiland extend across the upper face of their corresponding bar as shown more clearly in Figs. 5 and 6 where they are again deflected to form concave seats or opensided loops -12- having opposed shoulders -13 and -14 engaging opposite edges of said bar to firmly hold the adjacent end of the springs and bar against relative transverse movement without in any way interfering with the free sliding adjustment of said springs along and upon thebars to whatever position may be desired. These oflset arms -11 are spring-tensioned against the upper faces of their respective bars which not only serves to increase the frictional grip of'the offset upon the bar but also tends to draw the adjacent convolutions more snugly against the lower and upper faces of the same bar.

The outermost bars 3 are preferably made of round wire but the innermost bars consist of flat metal strips. These flat metal strips are particularly efficient in holding the springs against rocking movement either transversely or lengthwise of the bar, while the use of the round rods are more effective in preventing rocking movement of the springs lengthwise of the bars, but by using both the fiat strips and the round rods in connection with the same system of springs, tied together in the manner described, it will be noted that the convolution just above the bar has two relatively long bearings thereon 'while the lower convolution also has two ing to prevent transverse rocking movement of the bar.

This particular connection of the spring with either bar and particularly with the flat bar forms one of the 'main features of my invention, and while I have shown and described a system of springs for a seat, I do not wish to limit myself to the use of any particular number of springs nor to their application to a seat since the same invention may be applied to spring hacks for chairs, couches, settees and other pieces of upholstered furniture.

What I claim is:

1. In a spring seat, a spring-supporting bar having a straight portion of uniform cross sectional area throughout its length and of sufiicient length to support a pluralconical helical spring having its smaller end sup orted on said strai ht ortion of the P g P bar and slidable len thwise thereof, the lowermost convolution eing engaged with the under side of the bar and the terminal end rality bf helical springs side by s1 e, and the" helical springs having their lower ends slidof said bar and ably interlock with said bar for relative adjustment lengthwise thereof, the lowermost convolutions of said springs gw g the under side of the bar and having teir terminal ends extended across the upper side ea oned to frictionally engage the same. v

3. In a spring seat, a plurality of springsupporting bars extending in the same generaldireetion some distance apart, an outer marginal set of coil springs sappo on said bars, a marginal frame a a 1| Ha said enter set of springs and attached to the g around npper convolntiens thereof, an inner set of springs supported by the cprresponding bars, and a separate frame supported by the upper convolutions of the inner set in ap roximately the same horizontal plane as t at of the marginal frame and movable under pressure independently of the marginal frame.

In Witness whereof I have hereunto set my hand this 28th day of April, 1914.

H LES.

Wihggesses: J MORY WM. z 1 LEWIS. 

